yellow    umuhōndo, umugina, umutugutu
(dark) ibihogo
(of egg) umutugutu
(to become ~) kubēnja
(to become yellowish) kubēnjūka
En-En dictionary 
colour    irāngi
(black) umukata, umufyiri, agafyīri,
(very) umuvyiro
(black mud) urushānga
(blue) ubururu
(brown) ibihogo
(brown, light) akagājo, umuyēnzi
(brownish black cow) ikirāyi
(gray) -vivi, agahīza, akavūzo, uruvūzo
(green) akātsi gatoto
(orange) umutugutu
(red, like mud) agahama
(tan hair, of goats) umufūmbere
(very white) derere
(yellow) umuhōndo, umutugutu
(yellow, dark) ibihogo
(yellow, light, reddish) umugina
(to be black) kwīrabura
(to be white) kwēra
(to become yellow or reddish, in ripening) kubēnja
(to colour) kuraba
(to ~ in) gusiga amabara
(to change ~, fade) kubēnjūka, kubēngūka
En-En dictionary 
ripen    kwēra
(become yellow or reddish) kubēnja
(for certain fruites, esp. bananas) gusha
(of fruits) kurunguriza
En-En dictionary 
kubēnja (-bēnje)     v    1. to ripen, 2. become yellow or reddish
ishike (ama-)     5  class 5
singular: i-,iri-
plural: ama-
  
yellow daisy
umutobotobo (imi-)     2  class 2
singular: umu-
plural: imi-
  
thorn tree with yellow balls
umutugutu (imi-)     2  class 2
singular: umu-
plural: imi-
  
1. yellow, 2. orange (color), 3. purple, 4. yellow of eggs (yolk)
-tugutu   adj    1. yellow, 2. orange (color), 3. purple, reddish
amashigisha    5    corn of a certain kind (yellow)
ibihogo    4    (no pl.) dark yellow, brown
kubēnjūka (-bēnjūtse)     v    1. to fade, 2. become pale, yellowish green, 3. to change color
umugina (imi-)     2  class 2
singular: umu-
plural: imi-
  
1. light yellow, 2. reddish, 3. white ant hill
umuhōndo (imi-)     2  class 2
singular: umu-
plural: imi-
  
yellow
corn    ikigōri
(cob) igitiritiri
(early kind) isega
(kind with big kernel) ikijigo
(ground corn that has first been roasted) igikweme
(silk) ubusage
(tender new) igishōro
(yellow kind) amashigisha
(to shell) guhungura, kuvūngurīsha
(wheat) ingano
En-En dictionary 
daisy    (yellow) ishike
En-En dictionary