The devil's, and the UNION had them all!
If you take one flag and reverse the colors to create another flag, are you not corrupting the intent of the original design for your own purposes?
The 1st US flag (the Continental Colors) was almost an exact copy of the British Red Ensign, with the British red background changed to red/white striped. Did the founders corrupt the intent, were they evil?
W. P. Miles did not take an existing flag and reverse the colors. He certainly did not take the Scottish flag and pervert it - he was a amatuer vexillologist who chose a 'saltire' for it's religious connotation with CHRISTIANITY and a heraldic symbol of STRENGTH, and it's blue color symbolized TRUTH. Miles chose to place the blue saltire on a red background to symbolize COURAGE and the blood that was shed, the white border of the saltire to represent PURITY, the white stars for the sovereignty of God and the states.
Again, Miles said of it, '[t]he flag should be a token of humble acknowledgement of God and be a public testimony to the world that our trust is in the Lord our God.'