abstract background blue dark deep free image photo texture
Here is an old fabric or canvas abstract texture that had a lot of paint and marks and stuff on it. There are other versions including the original on the site, but in this case I wanted a really dark and deep blue background. So I added some photo filters and played a lot with the hue and saturation settings and came up with this. As a standard grunge background it is possibly a little too saturated but that would be easy to adjust to your taste.