Added color to "CARET_COLOR" to increase readability

Hello negativefix,

i'm using your schema in phpstorm for some time right now. After i've migrate my shell and all available environment to a zenburn schema, i figured out the one tiny thing i would like to improve.
I'm a php developer, so i must write that i'm using your schema in php- and mysqlfiles in general. Hopefully the modified color is the same when dealing with html- or javascriptfiles.
Anyway, i changed the color and if you like it, i can remove my branch and use yours again - as it is intended from my point of view ;-).

Greetings and thanks for the schema,
artodeto