Ok, I've been modding my SA gave for a few days now... haven't really run into any issues except for the custom colors. 
I've basically been following JVT's mods mostly because I love the detail he puts into his cars, also I've been adding some from other international sites.  Now I've run into a problem when adding custom colors (JVT's instructions specifically) I added the additional lines to my carcol.dat file and it doesn't seem to be taking.  Every time I load up the game and take a car to the shop it doesn't have any of the new colors.  Any idea's as to why I can't seem to get the mod to take? 
Specifically, this is what I've added to my carcol.dat file: 
23,23,23			# 127 jvt gray ointment			dark 
130,7,160			# 128 jvt extra any purple		dark 
128,0,255			# 129 jvt extra purple			dark 
64,0,128			# 130 jvt extra dark purple		dark 
217,159,6			# 131 jvt gold b			yellow 
254,192,72			# 132 jvt gold c			yellow 
255,0,0				# 133 jvt signal red			red 
111,230,2			# 134 jvt signal green			green 
255,246,0			# 135 jvt signal yellow			yellow 
255,128,0			# 136 jvt signal orange			yellow 
255,149,0			# 137 jvt extra luminus			yellow 
10,86,59			# 138 jvt cool green			green 
253,192,237			# 139 jvt light pink			pink 
Do I need to place the color palate somewhere for it to pick up those colors?