RCA CTC-5 Westcott help

[Electronic M]

That is some poor convergence for having been adjusted. It also looks like your greyscale (balance of gun settings) is off, not to mention the purity.

With purity and convergence that far off color will not look good even if the circuits are working right.
Turn the color off, get purity perfect, try to improve convergence significantly (you may need to check the convergence circuits and convergence yoke position if that is the best it will do), set the greyscale so the blacks are black and the whites are white, get the brightness and contrast set for good monochrome pic then and only then turn up the color and try to get that right.

When the CRT setup is that poor turning on the color circuits is little more than a check of life in those circuits, since the CRT setup problems will bury the noticability most other issues....