Exterior

Here are a few 'templates' to let you whip up a colour scheme in just a few minutes. They are not pixel-perfect, but tolerable with minimal touch-ups when scaled down two or four times.

Follow the thumbnail link to get the file. Fill in each area with the colour of your choice (namely, cream or maroon), and multiply by the TTC's white exterior image from here. (The bottom narrow stripe follows the body crease and the wheel panels. The upper three stripes are the same width, surrounding the windows and doors.)

This is a more complicated (and even less polished) version with vertical divisions.

Interior

This is a little more complicated. First get the grey chairs here, and overlay it on top of the TTC's black and white from here. This lets you colourize the chairs without interference.

Then replace the colours here, and multiply.

 

Examples
Current CLRV colours of red white and slush. Image Hosted by ImageShack.us
Maroon, cream, ... and slush. Image Hosted by ImageShack.us
No slush! For fans of the CLRV's hide-the-windows-and-doors style. Image Hosted by ImageShack.us
PCC-ish. (Next time I'll paint on standee windows.) Image Hosted by ImageShack.us
Creamy... Image Hosted by ImageShack.us
And more. This is too easy.