Can I alter a knit pattern?

I am desperately wanting to knit a “Swoncho” http://www.pickles.no/garland-sweater-poncho but I would like to just make it a solid color with no pattern. Can I do it using the above pattern instructions?

I think with this pattern that would be fine. With a ribbed or cabled pattern the size might be affected, but it shouldn’t be a problem with fair isle. Do a gauge swatch to check.

Thank you