Where does “watercolor” come from?

I notice this etymology chain appears problematic—it jumps from "English water closet" to "Old English wæter" to "Latin color," which doesn't represent a coherent derivation for "watercolor." The chain also contains duplicates and seems to conflate unrelated etymologies. I cannot write an accurate one-sentence origin summary because the chain provided doesn't support a valid etymology for "watercolor." A legitimate chain would trace: English watercolor ← English water + color ← Old English wæter + Latin color, with each element traced separately to its roots. Could you verify the etymology chain? I'm happy to write the summary once a coherent chain is provided.

watercolor (English): A painting technique using paint made of...

Definitions

  1. A painting technique using paint made of...

Ancestry of “watercolor”, step by step

watercolor traces back through two separate lines of ancestry.

via English color

StepLanguageWordMeaning
1EnglishcolorThe spectral composition of visible light; A...
2Frenchcouleurcolor, colour; a flush; suit
3Italiancolorecolor, colour; hue; pip
4Polishkolorcolour; suit; flush
5Latincolorcolour, shade; color; pigment; complexion
6Ancient Greekμέτρονsomething used to measure: measure, rule, weight;...
7Ancient Greek-τρονForms instrument nouns
8Proto-Hellenic-tronForms instrument nouns from verb stems
9Proto-Indo-European-tromForms nouns denoting a tool or instrument
10Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via English water

StepLanguageWordMeaning
1EnglishwaterA substance found at room temperature and...
2Middle Englishwaterwater; water vapour, condensation; lake, pond,...
3Old Englishwæterwater
4Proto-West Germanicwatarwater
5Proto-Germanicwatōrwater
6Proto-Indo-Europeanwódr̥water
7Proto-Indo-Europeanwed-water
8Proto-Indo-Europeanwey-to wither; fade; to move, go ahead; to be strong;...

Words derived from “watercolor

Every word from Proto-Indo-European -tḗrEvery word from Ancient Greek -τρονEvery word from Ancient Greek μέτρον