Which rose is it? Some roses do have a paler green leaf color depending on the variety. Some are very dark, some are glossy, some are matte, they're all different. Without knowing the variety and/or seeing pictures of it it's very hard to say what it could be.

What's your pH results from the soil test?

Below is a link that might be worth reading

Here is a link that might be useful: Iron chlorosis in CO

Overall light green color is usually nitrogen deficiency. Other deficiencies produce a pattern in the leaf, for example green veins in the case of iron. Mixing certain materials like partially composted leaves into the soil can cause chronic N deficiency. Leaves need to rot for two years unless you compost scientifically with the right amount of "greens."

Soil PH is 7.6. The rose is an Ingrid Bergman variety. The color of the leaves is almost yellow. The plant grows fine and other than the color of the leaves you wouldn't know anything was wrong. It has been this way for a couple of years now. However the plant wasn't always this color.

You didn't respond to my point about whether the veins are greener than the background. This would indicate iron deficiency caused by the high pH. I would add 1/2 cup of sulfur per square yard of pH 7.6 soil. It will take a year or more to work. Meanwhile you can apply an iron supplement. The yellow foliage has less chlorophyll and so captures less growth energy than green leaves.

All my established roses and the peace I just planted all have dark green glossy leaves .
I planted three bare root hybrid teas and they all have matte light green leaves. I thought there might be a problem so I looked them up and they are all suppose to have light green matte foliage.