If the image is too green even in the center where it is not discolored then it probably could benefit from a gray scale adjustment (ie screens and color gain controls adjusted for an untinted monochrome picture).

Those green cataracts are not all that hard to fix either.

Our 1963 Motorola (heavy metal) 19" was pretty bright but images were still hard to see, I was almost 6 and a bit confused like others my age. Dad recalled it being on a weekend.
We had moved from SanAntonio to live at my Grandma's in Penna. just two months before. Likely we watched it on WFIL-TV 6 from Phila, the clearest channel from the stacked conical VHF antenna.
It was a field (sand)stone house deep in the woods, only some fans were needed to stay cool then, great times.