Test image - high resolution print

[racing_green]

I just printed some A3 drawing with plenty of small details and I was not happy with the results. Red colour was not sharp for some reason. Is there a test image available for printing for resolution test? That style, but with colours:

 

[Ink stained Fingers]

Can't you just change the black into any other color in your photo editor ?

 

[Tassem]

Perhaps these can be of some use: