Oh I looked at the link. I just couldn't read it.
I figured out the differences - one's non-specular (FS 35042) and one's, basically, a semi-gloss. There is a tonal variation, but one that should be fairly easy to adjust. I've got FS 35042 and FS 15042 (gloss) so I should be able to cook something up that's relatively correct to FS 25042.