[giotto]

Mr McGuirk said that he did not know whether to press the orange or blue buttons

"I went for two blue which I thought was a less horrid colour than the orange."

...this had sucked blood from Thomas instead of sending it to him

"I should have pressed the two orange buttons, which would have pushed the blood from the circuit to Thomas

The logical choice would have been orange, which one would associate with an influx of blood. But McGuirk's decision making process seems to be based on what would look good with his shirt.

[Physicist]

The logical choice would have been orange, which one would associate with an influx of blood.

A blue-blooded Englishman would beg to differ.

[ApplegateRanch]

'Orange' for "the glow of healthy perfusion" and 'Blue' for "instant cyanosis"?

Note, the poor kid's respirator had already failed, which was why he was on this machine.

My best buddy just retired last week as a perfusionist; needless to say, (but I will anyway) I emailed this to him.

[monday]

"The logical choice would have been orange, which one would associate with an influx of blood. But McGuirk's decision making process seems to be based on what would look good with his shirt."

Except that blood is red, not orange.