This is the 1091st most frequent Catalan word.
color
The Catalan word "color" means "color" in English.
In this sentence, 'color' is used to describe the attribute of 'blau clar' (light blue) pertaining to the sky.
El cel avui té un color blau clar.
The sky today has a light blue color.
Here, 'color' refers to the specific hue or appearance of the paint.
M'agrada molt el color de la pintura que has escollit.
I really like the color of the paint you have chosen.
In this context, 'colors' are used metaphorically to express enthusiasm and vividness of the decorations at the party.