Here are a few valve textures I modified:
Old | New
This was meant to be a RED wall, I thought it looked too brown so I made it redder.
Old | Old | New
There was a plain version and a Blue Version, so I added a RED version
Old | New | New
There was a plain version so I added a RED and a BLU version.
Old | New
Basically some Blue painted wood this one was kind of experimental, but someone may want it.

Old | New
This was meant to be a RED wall, I thought it looked too brown so I made it redder.

Old | Old | New
There was a plain version and a Blue Version, so I added a RED version

Old | New | New
There was a plain version so I added a RED and a BLU version.

Old | New
Basically some Blue painted wood this one was kind of experimental, but someone may want it.