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1-8 Under budget

Logic:
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Start = Reset all numbers.
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//Counter:
If 'Colour sensor' = 1,then 'Add' to 'Count'.
If 'Colour sensor' > 1,then 'Subtract' to 'Count'.
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//Electronic compass:
Divide 'Cumulative Rotation' to 90 (For reaching counter numbers - 0÷90=0,90÷90=1,180÷90=2,etc...)
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//Left motor:
'Cumulative Rotation÷90' Greater then 'Counter result + Accuracy range' ?
If yes,then change 'Left motor direction'
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//Right motor:
'Cumulative Rotation÷90' Less then 'Counter result - Accuracy range' ?
If yes,then change 'Left motor direction'
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//End.

The greater numbers in 'Accuracy range',the faster it is(but lower compass accuracy ofc.).

Also,you can reach "time" goal if you add a caster wheel on the front side of the bot and decrease his "compas following" accuracy in "circuit board" in "Static value(named 'Accuracy range') gate".