Abstract "Color composition, process for dyeing keratin fibers and multi-compartment device" The present invention is directed to a composition for dyeing keratin fibers comprising (a) one or more liquid fatty substances； (b) one or more amphoteric surfactants of formula (i) wherein b is -ch 2 -ch 2 -o-x '； b 'represents the group - (ch2) zy', with z = 1 or 2； x 'represents the group -ch2-c (o) oh, -ch2-c (o) oz', -ch2-ch2-c (o) oh or -ch2-ch2-c (o) oz ', or an atom of hydrogen； y 'represents the group -c (o) oh, -c (o) oz' ', -ch2-ch (oh) -so3h or the group -ch2-ch (oh) -so3-z'； z 'and z' 'independently represent a cationic counterion derived from an alkali metal or an alkaline earth metal such as sodium, an ammonium ion or an ion derived from an organic amine； ra 'represents a C10 -C30 alkyl or alkenyl group derived from a ra'-c (o) oh acid, which is preferably present in copra oil or hydrolyzed flax oil, an alkyl group, in particular a group with c17 and its iso form, or an unsaturated c17 group and n represents an integer ranging from 1 to 10 and preferably from 1 to 5, or quaternized forms thereof； (c) one or more sulfated or sulfonated anionic surfactants； (d) one or more oxidation dye precursors. The present invention also relates to a process utilizing such a composition and a multi-compartment device that is suitable for performing said process.resumo “composição colorante, processo para a tintura das fibras queratínicas e dispositivo com compartimentos múltiplos” a presente invenção trata de uma composição para a tintura das fibras queratínicas, que compreende (a) um ou mais substâncias graxas líquidas； (b) um ou mais tensoativos anfóteros de fórmula (i) na qua b representa o grupo -ch2-ch2-o-x'； b' representa o grupo -(ch2)zy', com z = 1 ou 2； x' representa o grupo -ch2-c(o)oh, -ch2-c(o)oz’, -ch2-ch2-c(o)oh ou -ch2-ch2-c(o)oz’, ou um átomo de hidrogênio； y' representa o grupo –c(o)oh, -c(o)oz’’, -ch2-ch(oh)-so3h ou o grupo -ch2-ch(oh)-so3-z’’； z' e z'' re
