The Japanese word for color is
色

いろ - iro

Japanese Definition

color
1. 別表記. colour (アメリカ合衆国以外)
2. 名詞. 色。光（可視光線）のスペクトルの合成成分
Humans and birds can perceive color.
人間や鳥は色を認識する
3. 名詞. 色彩。認識できたり、名付けられているスペクトル光の一式
Most languages have names for the colors black, white, red and green.
多くの言語は黒・白・赤・緑の色の名前を持っている。
4. 名詞. （黒・白・灰色のような無彩色に対して）色調。
He referred to the white flag as one 'drained of all color'.
彼は白旗を「すべての色が流れ去った」旗と呼んだ。
5. 名詞. 人間の肌の色、特に人種や民族を指す。
Color has been a sensitive issue in many societies.
人種・民族については多くの社会で敏感な問題となっている。
6. 名詞. （比喩的に）特色。特定の地域で興味のある、格別な特徴。
a bit of local color.
地域色の一端
7. 形容詞. （濃淡のある灰色に対して）色の付いた、色彩がある
Color television and movies were considered a great improvement over black and white - カラーテレビ・カラー映画は白黒のものに比べて遙かに進歩したものと考えられていた。
8. 動詞. 着色する
We could color the walls red
私たちは壁を赤くすることができたんだが。
9. 動詞. 塗り絵をする。線描による境界の内側の区画にカラーマーカーやクレヨンを使って色を塗る。
My kindergartener loves to color
我が家の幼稚園児は塗り絵が大好きだ。
10. 動詞. 顔を赤らめる
11. 動詞. 完全に変えることなしに影響を与える
That interpretation certainly colors my perception of the book
その解釈は私のその本に対する見方に確実に影響する。
12. 動詞. ～という性質を有すると考える。
(口語) Color me confused
戸惑っていると思ってくれ。/わけが分からないよ。

Translations for color and their definitions

色
1. n. (from 720) color
目の色が違う猫 - a cat that has eyes of different color
2. n. (from 797) (figurative) the metaphorical color or mood
3. n. one's facial coloring or expression
4. n. the shape of one's face or appearance; more specifically, beautiful looks or a beautiful figure
5. n. lively elegance, enjoyable or interesting charm
6. n. apparent thoughtfulness, warmheartedness
7. n. the feeling or mood of a thing
8. n. the tenor or timber of a voice or sound
9. n. in Noh, a section that is chanted at a medium pace; alternately, a decorative poetic section
10. n. in (m-lite, ja, sc=Jpan, 浄瑠璃, , tr=jōruri, puppet show narrative), a lively section that is neither strictly dialog nor narration, but has many elements of dialog
11. n. when playing the koto, pushing on a string with the fingers of the left hand to change the pitch of a note, or for vibrato
12. n. (from early 900s) something related to romantic or sexual love, particularly between genders
13. n. the emotions or circumstances of attraction between genders
14. n. extramarital relations, an affair
15. n. an extramarital lover
16. n. a prostitute
17. n. a red-light district
18. n. (from late 900s) the type or kind of something
19. n. (informal slang) various specific kinds of color:
20. n. (informal slang) lipstick or rouge
21. n. (informal slang) soy sauce
22. n. (informal slang) paint
23. affix. relating to a love affair or the red light district
24. affix. of that tone or timber or mood
25. affix. relating to type or kind
26. affix. Usage: Only found in compounds.
27. n. (obsolete) coloring, design
28. n. (Buddhism) material form, specifically the organized body as one of the five constituent elements or skandhas
29. n. that which is visible of a thing, specifically form and color
30. n. color
31. n. Usage: Used extensively in compounds.
32. affix. color (US), colour (everywhere else)
33. affix. Usage: Used in compounds.
34. counter. used to count the number of colors
三色刷り - three-color printing

色彩
1. n. colour, hue

染める
1. v. (ja-vp, 染める, 染まる)
2. v. to dye
髪を赤く／茶色に染める - to dye one's hair red / brown
3. v. to color; to paint; to blush
4. v. (手を染める) to set about; to be involved with
5. v. (筆を染める) to start writing
6. v. attaches to the continuative form (連用形) of a verb: to get the color or smell through something (＝染み込む)
煮染める - to boil down
焚き染める - to burn incense to get its smell fully into

業績
1. n. performance, achievement, results, track record (in business, finance, etc.)
会社の業績が振るわない。 - The company is not doing well.

幟
1. n. flag, banner

塗る
1. v. to paint or plaster
2. v. to spread on, to dab on, to apply
油を塗る - grease, anoint with oil
3. v. to fill in
マークシートを塗る - to fill in the bubble sheet