A method for providing a colored self-cleaning aluminum sheet product, the method comprising: (a) first producing a colored aluminum sheet product having a predetermined color and a predetermined gloss, the first producing step comprising: (i) roll coating a colored coating liquid onto an aluminum alloy sheet; and (ii) converting the colored coating liquid into a colored layer, wherein the colored layer is located on an outer surface of the aluminum alloy sheet; (b) second producing an intermediate aluminum sheet product, the second producing step comprising: (i) roll coating an inorganic barrier coating liquid onto at least a portion of the colored layer of the colored sheet product, wherein the inorganic barrier coating liquid is a coating comprising silica; and (ii) converting the inorganic barrier coating liquid into an inorganic barrier layer, wherein, after the converting step, the inorganic barrier layer is located on at least a portion of the colored layer; and wherein, after the second converting step, the intermediate aluminum sheet product retains the predetermined color and retains the predetermined gloss of the colored aluminum sheet product; and (c) third producing a colored self-cleaning aluminum sheet product, the third producing step comprising: (i) roll coating an aqueous-based self-cleaning coating precursor liquid onto at least a portion of the inorganic barrier layer of the intermediate sheet product; wherein, the self-cleaning coating precursor liquid includes silica and titanium dioxide, wherein titanium dioxide is in the form of photocatalytically active semiconductor particles; (ii) converting the aqueous-based self-cleaning coating precursor liquid into a self-cleaning layer, wherein, after the third converting step, the self-cleaning layer is located on at least a portion of the inorganic barrier layer, wherein, the colored self-cleaning aluminum sheet product retains the predetermined color and retains the predetermined gloss of the colored aluminum sheet product. (a) first producing a colored aluminum sheet product having a predetermined color and a predetermined gloss, the first producing step comprising: (i) roll coating a colored coating liquid onto an aluminum alloy sheet; and (ii) converting the colored coating liquid into a colored layer, wherein the colored layer is located on an outer surface of the aluminum alloy sheet; (i) roll coating a colored coating liquid onto an aluminum alloy sheet; and (ii) converting the colored coating liquid into a colored layer, wherein the colored layer is located on an outer surface of the aluminum alloy sheet; (b) second producing an intermediate aluminum sheet product, the second producing step comprising: (i) roll coating an inorganic barrier coating liquid onto at least a portion of the colored layer of the colored sheet product, wherein the inorganic barrier coating liquid is a coating comprising silica; and (ii) converting the inorganic barrier coating liquid into an inorganic barrier layer, wherein, after the converting step, the inorganic barrier layer is located on at least a portion of the colored layer; and wherein, after the second converting step, the intermediate aluminum sheet product retains the predetermined color and retains the predetermined gloss of the colored aluminum sheet product; and (i) roll coating an inorganic barrier coating liquid onto at least a portion of the colored layer of the colored sheet product, wherein the inorganic barrier coating liquid is a coating comprising silica; and (ii) converting the inorganic barrier coating liquid into an inorganic barrier layer, wherein, after the converting step, the inorganic barrier layer is located on at least a portion of the colored layer; and (c) third producing a colored self-cleaning aluminum sheet product, the third producing step comprising: (i) roll coating an aqueous-based self-cleaning coating precursor liquid onto at least a portion of the inorganic barrier layer of the intermediate sheet product; wherein, the self-cleaning coating precursor liquid includes silica and titanium dioxide, wherein titanium dioxide is in the form of photocatalytically active semiconductor particles; (ii) converting the aqueous-based self-cleaning coating precursor liquid into a self-cleaning layer, wherein, after the third converting step, the self-cleaning layer is located on at least a portion of the inorganic barrier layer, wherein, the colored self-cleaning aluminum sheet product retains the predetermined color and retains the predetermined gloss of the colored aluminum sheet product. (i) roll coating an aqueous-based self-cleaning coating precursor liquid onto at least a portion of the inorganic barrier layer of the intermediate sheet product; wherein, the self-cleaning coating precursor liquid includes silica and titanium dioxide, wherein titanium dioxide is in the form of photocatalytically active semiconductor particles; (ii) converting the aqueous-based self-cleaning coating precursor liquid into a self-cleaning layer, wherein, after the third converting step, the self-cleaning layer is located on at least a portion of the inorganic barrier layer,