Oscillation stability for continuous monotone surjections

We prove that for every real ε>0 there exists a positive integer t such that for every finite coloring of the nondecreasing surjections from [0,1] onto [0,1] there exist t many colors such that their ε-fattening contains a cube, i.e. a set of the form {f∘h:fnondecreasingsurjection from[0,1]onto[0,1]} where h is a nondecreasing surjection from [0,1] onto [0,1]. We prove this as a consequence of a corresponding result about bω and we determine the minimal integer t=t(ε) that works for a given ε>0.