Hampden Park Ltd has been given permission to extend the north stand, which will increase the circulation area for spectators and allow for disabled toilets and more catering kiosks.
The planning committee's decision is expected to be rubber stamped when the full council meets next week.
Councillors were told the extension, which will be 25m from houses in Somerville Drive, will be clad in aluminium which will be dark and pale blue in colour – the corporate colours of Hampden. But householders are unhappy that the view from their windows will be dominated by the dark extension.
Langside councillor Susan Aitken said residents were not against the extension but wanted designers to re-think the design and colour.
She said: "These residents have been good neighbours to Hampden for a long time.
"They are supporters of Hampden and use it and are big supporters of the Commonwealth Games.
"But they will have to live with this and their quality of life doesn't seem to have been greatly considered.
"It may be the corporate colours of Hampden, the Scottish Football Association and the Scottish football team but that doesn't mean it is a terrific colour to look at day after day.
"We all want to see a long lasting legacy- but is it really necessary for a corporate brand to have such precedence at the expense of residents?"
Ms Aitken suggested glass bricks would be a better option.
But a spokesman for Hampden said: "We have not used glass bricks because we did not want to be overlooking people.
"We could argue all day about what the colours should be but we have a rationale which is Hampden Park Ltd and Scotland's colours."
He was backed by council senior planning official Ken Clark who said: "This is Scotland's national stadium and we feel it is appropriate they should be able to use their national colours."
During the 2014 Commonwealth Games, Hampden will host both the athletics events and the closing ceremony.