Epson ET-3850 Ecotank printer/copier/scanner (Chiswick W4)

This printer is working for most functions however I need to print photos and I am not getting the right colours from the Ecotank design. But it does print, black & white is absolutely fine. I have cleaned the printer heads but maybe someone with a bit more technical knowhow can fix this so the colour printing is also good. One half used bottle of black ink included.