7 letter words:
colours9,
6 letter words:
clours8,
colors8,
colour8,
5 letter words:
clour7,
color7,
cools7,
curls7,
locos7,
locus7,
scour7,
lours5,
4 letter words:
cols6,
cool6,
coos6,
cors6,
crus6,
curl6,
curs6,
loco6,
orcs6,
rocs6,
loos4,
lour4,
ours4,
slur4,
solo4,
soul4,
sour4,
3 letter words:
col5,
coo5,
cor5,
cos5,
cru5,
cur5,
orc5,
roc5,
loo3,
ors3,
our3,
sol3,
sou3,
2 letter words:
lo2,
or2,
os2,
so2,
us2,
