Gainsboro (gray-ish)
Gamboge (orange-ish brown-ish)
Ghost white (white)
Ginger (brown)
Glaucous (blue)
Glitter (white- ish gray-ish)
Gold (metallic)
Gold
Golden brown
Golden poppy (yellow)
Golden yellow
Goldenrod
Granny Smith Apple (green)
Gray
Gray-asparagus (green-ish gray)
Green
Green-yellow
Grullo (gray-ish)
Guppie green
golden finch
S. G. Yerbury has written: 'Colour reflection' 'Colour portraiture by collotype'
A mood starting with G is generous.
An attitude starting with G is gracious.
A thing starting with G is garage.
A place starting with G is Genoa, Italy.
An antelope starting with G is gazelle.
A beverage starting with the letter "g" can be Gatorade... or if you found another answer, then great.
Yellow!!
fuschia
A place starting with G is Great Britain.
A geographical feature starting with G is a gorge.