Re-work and clean up the Halo style code
HALO: Speech bubble color and text color

TODO: Now ditch Halo Style and bring colors instead.... Because, users had a colorful mind. So let's bring in a colorpicker instead...
HALO: Circle color
HALO : Ability to enable/disable custom colors

Why? Because, we all know some themers might theme the halo bg or also maybe the speech bubbles, so we trying not to mess with the alternate colors... ;)

Also, the drawable are being color filtered...
HALO : Effect colors