changed hexcode values of red and green to improve accessibility

android_app/app/src/main/res/drawable/ic_biceps.xml

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android_app/app/src/main/res/drawable/ic_bmr.xml

@@ -1,6 +1,6 @@
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android_app/app/src/main/res/drawable/ic_bone.xml

@@ -4,9 +4,9 @@
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     android:viewportHeight="512">
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android_app/app/src/main/res/drawable/ic_caliper1.xml

@@ -4,7 +4,7 @@
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android_app/app/src/main/res/drawable/ic_caliper2.xml

@@ -4,7 +4,7 @@
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android_app/app/src/main/res/drawable/ic_caliper3.xml

@@ -4,7 +4,7 @@
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