1. Appearance: Light-colored igneous rocks, also known as felsic rocks, are characterized by their light hues, such as white, gray, or beige. They may appear light due to the presence of abundant feldspar minerals and quartz.

2. Mineral Composition: Felsic rocks are dominated by light-colored minerals, including feldspar and quartz. Feldspar minerals, such as potassium feldspar and plagioclase feldspar, are abundant and give the rocks their light appearance. Quartz is another common mineral found in light-colored igneous rocks.

3. Texture: The texture of felsic rocks can vary widely, from coarse-grained to fine-grained. Coarse-grained felsic rocks, such as granite, have large, visible mineral crystals, while fine-grained rocks, such as rhyolite, have a finer texture with smaller crystals.

4. Origin: Light-colored igneous rocks are formed when magma or lava that is rich in silica and aluminum undergoes cooling and solidification. These rocks are commonly associated with continental settings, including volcanic arcs, continental rifts, and large intrusive bodies.

5. Examples: Some common examples of light-colored igneous rocks include granite, rhyolite, aplite, and pegmatite.

Dark-Colored Igneous Rocks:

1. Appearance: Dark-colored igneous rocks, also known as mafic rocks, are characterized by their dark hues, such as black, dark gray, or dark brown. They appear dark due to the presence of abundant iron- and magnesium-rich minerals.

2. Mineral Composition: Mafic rocks are dominated by dark-colored minerals, including pyroxenes, amphiboles, and biotite mica. These minerals contain higher proportions of iron and magnesium compared to the minerals found in felsic rocks.

3. Texture: The texture of mafic rocks can vary, but they are often fine-grained to medium-grained. Minerals in mafic rocks are usually smaller and less distinct compared to those found in felsic rocks.

4. Origin: Dark-colored igneous rocks are formed when magma or lava that is rich in iron and magnesium undergoes cooling and solidification. These rocks are commonly associated with volcanic environments, such as mid-ocean ridges, oceanic islands, and continental flood basalt provinces.

5. Examples: Some common examples of dark-colored igneous rocks include basalt, gabbro, andesite, and diabase.

In summary, the primary difference between light-colored igneous rocks and dark-colored igneous rocks lies in their mineral composition and appearance. Felsic rocks are light-colored and rich in feldspar and quartz, while mafic rocks are dark-colored and rich in iron- and magnesium-rich minerals.