Yes Silver is higher then Gold when it comes to Eagle Palms!

Eagle Palms

First awarded in 1927, Eagle Palms are not a rank but an award. The requirements include earning 5 additional Merit Badges after earning the Eagle Scout rank or last Eagle Palm, tenure, and leadership.

The Eagle Scout rank requires that you earn 21 of the 121 Merit Badges. After earning the Eagle Scout rank, you can continue to earn Merit badges and Eagle Palms until your 18th birthday. Currently the maximum number of Eagle Palms you can earn is 20, worn as six silver palms and one gold palm. You would need at least 3 months for each palm for a total of 60 months, or five years after earning Eagle. To earn all 20 palms you would need to earn Eagle by your 13th birthday.

Palms represent additional advancement for a young man who has stayed active in his unit.  A Palm is awarded when the Scout has been active in the unit for at least three months since attaining Eagle (or a previous Palm); has demonstrated Scout Spirit, leadership and ability; has earned five additional merit badges beyond those required for Eagle or the last Palm; and has taken part in a conference with his unit leader.

Eagle Palm Application

The insignia is a small metallic palm frond pin or device that is worn on the ribbon of the Eagle Scout medal or the Eagle Scout square knot. The Palms are awarded in three colors: bronze, representing five merit badges; gold, representing ten merit badges; and silver, representing fifteen merit badges. For each Palm awarded for five additional merit badges beyond the first bronze, gold, and silver recognitions, Palms are worn in combinations which require the smallest number of devices to reflect the total number of Palms earned. For instance, a Scout who has earned eight Palms would wear two silver Palms and a gold Palm.  The order of bronze, gold and silver follows heraldic traditions borrowed from the U.S. military

Because of the three-month service requirement for palms, and the termination of advancement on a Scout’s 18th birthday, the ability to earn palms will depend on the timing of a Scout’s Eagle Board of Review. For example, a Scout who earns Eagle within three months before his 18th birthday will be unable to earn any palms regardless of the number of merit badges earned, because he will not be able to perform three months additional active service before becoming ineligible for further advancement.